The current modulation characteristics of a short external cavity tunable laser are presented. The 1540 nm Fabry-Perot diode laser is wavelength-tuned by the electrostatically controlled silicon micromachined Fabry-Perot interferometer device. The measured -3 dB cutoff frequency of 600 MHz is the widest reported direct modulation bandwidth of the external cavity tunable laser.
Heikkinen, V., Ollila, J., Rantanen, T., Vanhatalo, K., & Karioja, P. (2004). 600 MHz direct modulation of short external cavity wavelength-tunable diode laser. Electronics Letters, 40(14), 871 - 872. https://doi.org/10.1049/el:20045023